Pierre boimare



No. 620,097. Patented Feb; 28, I899.

P. BOIMARE.

MANUFACTURING OR OTHER FURNACE.

(Application filed Oct. 19, 1898.) (No'ModeL) UNITED STATES PATENTOFFICE.

PIERRE BOIMARE, OF PARIS, FRANCE.

MANUFACTURING OR'OTH ER FURNACE.

SPECIFICATION forming part of Letters Patent No. 620,097, dated February28, 1899.

Application filed October 19 1898. Serial No. 693,961. (No model.)

To all whom it may concern.-

Be it known that I, PIERRE BOIMARE, of 13 Rue Mansart,Paris,in theRepublic of France, have invented certain new and useful Improvements inManufacturing or other Furnaces, of which the following is aspecification.

My invention relates to an improved device for feeding manufacturing andother furnaces whereby the smoke given off by combustion may beabolished. The said device consists,- in principle, of a feeding anddistilling chamber placed in front of the stoke-hole of the furnace ofany kind, in which the coal previously fed in becomes gradually heatedand the volatile matters which it contains distilled before beingintroduced into the combustion-chamber of the furnace, and certaindevices calculated to facilitate the distillation and the feeding of thecoal to render complete the efficiency of the said distilling-chamberand form by combination with the latter a new device by which completesmokelessness is secured, the fuel giving out at the same time a maximumamount of caloric.

I have shown in the accompanying drawings an improved device applied toan ordinary boiler-furnace.

' Figure 1 is a front view of the furnace, and Fig. 2 is a section online 1 2 of Fig. 1.

In front of the grate g of the furnace is arranged a casing or feedingand distilling chamber a, closed at the front by two doors I) and c.casing a is situated on a level With or higher than grate g. On the saidbottom and behind the door a is arranged a removable castiron block 01,easy of removal and having either a central hole 0 or. several holes forthe ingress of air and the passage of a stokingiron. One or severalholes are pierced through the door 0 and in register with those of theremovable block 01.

The coal is introduced through the upper door 6 and rests on the bottomof the casing a, behind the removable block d. As the coal becomesheated under the effects of radiation of the furnace it is stirred by astoking-iron entered through'the hole o, so as to expose all the partsto the heat and to facilitate the emission of the gases.

For the purpose of stimulating the distilla- The lower part or bottom ofthe tion of the coal it is sprinkled with water fed by a pipe f andwhich falls in showers through a watering-spout f, placed under the topof the casing a. A cock r controls the feed of the water, which willpreferably be taken from the feed-pipe of the boiler. When the dis=tillation of the coal is considered sufficient, the fuel is pushed ontothe grate g by means of the stoking-iron or in pushing forward the blockd, the door 0 being then wide open.

I claim- 1. A fuel feeding and distilling chamber for manufacturing andother furnaces, comprising a casing for the combustible placed in frontof the furnace and in direct communication with the combustion-chamberof the said furnace, and a pipe supplying water to the said feeding anddistilling chamber above the fuel in order to Water the same during itsdistillation, substantially as described.

2. A fuel feeding and distilling chamber for manufacturing and otherfurnaces, comprising a casing placed in front of the furnace, open atthe back toward the furnace, closed in front by two superposed doors,and having its bottom at a level higher than or at least equal to thatof the furnace-grate, in combination with a removable cast-iron blockhaving one or several holes pierced through it for the ingress of airand the passage of a stoking-iron, and a feed-water pipe having on itsend,within the said casing, a wateringspout full of small holes forwatering the coal during distillation,substantially as described.

3. The combination with a furnace and its grate, of a fuel feeding anddistilling chamber in communication with the combustionchamber of thefurnace and having its bottom on a level higher than or at least equalto that of the furnace-grate, and a removable block suitably perforatedfor the ingress of air and the passage of a staking-iron and arrangedwithin, and on the bottom of, the fuel feeding and distilling chamber,substantially as described.

Signed at Paris, in the Republic of France, this 7th day of October,1898.

PIERRE BOIMARE. Witnesses:

GEORGES LAURENT, EUGENE WATTIER.

